Carraige bolt solution

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Forum topic by yellabret posted 10-25-2014 02:59 PM 665 views 0 times favorited 3 replies Add to Favorites Watch
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51 posts in 1624 days

10-25-2014 02:59 PM

i have seen past posts looking for a way to keep carraige bolts from spinning, especially in softer woods. i was amazed that the “prong” or “torque” washers were not easy to find, and where i did find them they were only up to 1/2” and i needed 5/8”. plus i needed black since i am using antique bolts that are black oxide. a few places carried round washers with square holes, but all were plated and round does me no good. i was also stunned that it was so hard to find square hole square plate washers – i could chisel out a square in the wood and that would anchor the washer – but again size was an issue and the only ones i could find were in the UK.

so i came up with an idea that i am sure someone else has done before but at least i thought of on my own – and thought i would post it for future reference if someone has this issue years down the road and finds this in a search – i just cut some carbon steel off a piece of scrap angle iron, chiseled out a matching hole in the wood tangent to the hole, hammered it in and voila – done! the shoulder of the carraige bolt is firmly held on one side. now i am building a rustic piece so i was not worried about looks – i want it looking old and hand made – but for nicer pieces just take more time and do it more accurately. i really like the effect as it is and it fits perfect with the antique wood and bolts.

3 replies so far

View Dallas's profile


3599 posts in 1909 days

#1 posted 10-25-2014 03:59 PM

Interesting. I have put a couple of pieces of steel in to use as a washer/buffer before, but never just one.
Does the bolt have a tendency to pull to one side if you torque it down too tightly?

I have also cut a square of black iron, drilled a hole in it and cleaned up the hole to square with a dremel tool.
This makes the carriage bolt fit and the rough side lets the iron grip the wood so it can’t spin.

-- Improvise.... Adapt...... Overcome!

View MrRon's profile


3892 posts in 2665 days

#2 posted 10-25-2014 04:52 PM

Are you drilling the hole too large? If the bolt is turning, you may be tightening it too much. If the washer or nut is embedding itself in the wood surface, you are torquing it too much.

View yellabret's profile


51 posts in 1624 days

#3 posted 10-25-2014 05:59 PM

5/8 hole for 5/8 bolt – definitely tightening a lot because it needs to be sturdy to hold a 160 lb table top, i want zero wobble or movement of any kind at any time, including 50 years from now and more…. ;-)

these torque up just fine – no pull to the side at all, torquing about all my 6’ 260 lbs can do

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